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TOE-IN 3'. MdINTYRE, 0F INVEBNESS, NOVA SCOTIA, CANADA.

PEUUE$$ 0F TREATING WOOD TO BE USED IN MAKING PLUNGERS, 8w.

memos,

No Drawing,

Tocll' wiiom it may concern Be itknown that l, Jenn J. Moln'rmn, a subject of the King of Great Britain, residing at Inverness, 1n the Province of Nova Scotia and Dominion of Canada, have invented certain new and useful Improvements in Processes of Treating Wood to Be Used in Making Plungers, &c., of which the followingis a specification 1 v This invention relates to mine pumps and has. special reference to the production of cliicient material for manufacturing plungel-s, valve seats and valves to be used in said pumps.

Another object of this invention is the production of a simple and efficient process for treating or preparing the wood used in making plungers, valve seats and valves which are used in connection with mine pumps.

Other objects and advantages of the pres ent invention will appear throughout the following specification and claims.

By actual experience I have found that the action of water upon metal out of which the plungci's, valve seats and valves are usually made in mining pumps, causes the metal to be severely attacked due to the acid contaiued in the water, and thereby causes the metal to readily deteriorate, and hence, make it necessary to replace those parts which have become worn or otherwise unfit for use. In fact, I have found by experience that the destruction of these metal parts of the pump has been so rapid as to make it necessary to replace the same several times every second or third week where the pump is used constantly, thereby causing considerable loss and .im,-o11\'enicncc to the operator of the pump. For the above reason I have experimented with the use of different materials out of which these several portions of the pump may be manufactured, and found the following material and process would produce the desired result. I form the plungers, valve seats, and valves of the ordinary construction, but in place of using metal I use hard Wood specially treated and seasoned. It is preferable to use rock maple, beech or birch, and I first treat the wood as follows: I boil the same in hard Water for. tWo hours and then boil the Wood in linseed oil and pine tar for one hour, of the desired proportions or in a solution of alkaline salt; then While Specification of Letters Patent.

Patented Aug. 15, 1916.

Application filed October 13, 1914. Serial No. 866,527.

the Wood is still Warm I coat the same with talloW and rub the'tallow well into the Wood until the surface of the same is glossy. After the wood has been thus treated, the several parts are placed in their desired positions in the pump, and the pump may then be operated in the usual manner, and it will be found that the. plunger-s, valve seats and valves will last considerably longer and Will glve considerable more satisfaction than the usual metal employed in making these parts of the pump. It has been found by actual experience that the placing of the Wooden pieces within the. pump will not only cause considerable saving in cost, but that these parts may be more easily placed within the pump and may obtain a better fit than the metal parts which have been heretofore used.

It should be .understood that the present invention especially relates to the method of using wooden plungers, valve seats, and valves in a pump, and in order to cause the wood out of which the plunger-s, valve seats and valves are made to be of the best service in the pump, the wood is treated as above; set forth.

Having thus described the invention what is claimed as new, is

1. A pump of the class described having its plungers, valve seats and valves formed of hard wood which has been thoroughly boiled and treated with linseed oil and pine tar, and afterward thoroughly coated and rubbed with tallow for the purpose of producing a glossy surface and making the same w atcr-proof.

JOHN J. MQINTYRE.

Witnesses ANGUS MCDOWELL, L. BAIN. 

